In the early 1960s, the 75-mm gun with a muzzle velocity of 1,000 m/s was deemed outdated. The vehicle received the new 90-mm F3 gun that used more powerful HEAT shells. This modernization did not require any significant changes to the turret or vehicle design. The first vehicles were manufactured in February, 1967. The existing vehicles underwent the gun modernization as well.
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Expected
frags:
0.76
Expected
spot
2.37
Expected
defense points
0.75
Expected
winrate
51.21%
Tier VIII field modification
available for tier X tanks
+3% to hull traverse speed
+2.5% to vehicle hit points
+2 km/h to top forward speed
-3% to engine power
-3% to aiming circle size
+3% to reload time
-15% to HE-shell and ramming damage
-8% to stun duration
+20% to crew protection from injuries
-3 km/h to top reverse speed
+2% to concealment
-2% to view range